Project 10073 Record Card and Field Report — Fairfield, California, 18 August 1952

On August 18, 1952, three civilian observers in Fairfield, California, reported a sighting of an unidentified aerial object. The observation began at approximately 0030 PDT and lasted for roughly 30 minutes. The object was described as traveling slowly in an easterly direction, approximately 80 miles northeast of Travis Air Force Base. Witnesses reported that the object's color changed, appearing as red, green, orange, and blue, and noted that it changed appearance 'like a diamond.' The object exhibited unusual flight characteristics, including moving sideways before turning to move forward, while simultaneously gaining altitude. No sound was associated with the object, and it was reported that the object was too distant for the witnesses to distinguish its specific shape. Weather conditions at the time were reported as clear. The report was processed by the 28th Air Division at Hamilton Air Force Base and forwarded to the Air Technical Intelligence Center at Wright-Patterson Air Force Base. The documentation includes a Project 10073 record card, a teletype message, and a worksheet, all confirming the details of the sighting.